I think it either won’t happen, or it will damage the Republican Party for years to come. Im assuming Trump has people around him pointing out that creating a The War on Drugs Is Bullshit American Civil Liberties Union Est 1920 Shirt, Far-Right party would only serve to split the conservative vote and ensure Democratic control for the foreseeable future. Trump seems to confuse the number of votes he got with the number of ravenous supporters he has. A not-insubstantial number of his votes came from traditional Conservatives who vote straight Red regardless of the candidate. A good number of these would support a more moderate/ less divisive candidate if given the choice. By splitting the GOP all Trump does is dilute the voter pool for both parties. This would actually allow the Democrats to swing farther to the left as they would be all but assured of victory either way.
(The War on Drugs Is Bullshit American Civil Liberties Union Est 1920 Shirt)